337. Merwin Hulbert & Co. (Mfg. by Hopkins & Allen) – Early Open Top Large Frame Single Action “Pocket Army Variant” Revolver – Chambered in “Calibre Winchester 1873” (44-40 Win.) Cal. – w/3 ¼” Barrel w/Integral Blade Front & Notch Rear Sights – Gray Finish – w/Factory Checkered Hard Rubber Birds Head Grips – w/Lanyard Hole – Several Thousands Estimated to Have Been Mfg. Between 1876-1880’s